proper oil pressure
Fleet Owner
Joined: Jul 2004
Posts: 27,294
Likes: 1,055
From: NM
Originally Posted by WALFORD'S 56
My 272 was not running for 15 years and locked up.I only have 21,000 original miles and thought that 60-65 psi was unusually high.It is clean as a whistle inside,and I am using 30 weight non detergeant oil.I heard my DAD say that is what the old trucks ran.I looked at your message board and you guys say other-wise!Should I change the 30 n.d.oil and if I do will I get a different oil press. reading? THANKS
Fleet Mechanic
Joined: Sep 2004
Posts: 1,674
Likes: 2
From: Rowland Heights
Walford56 check out the site. Not too sure of the cost, I believe it's over $100 bucks for sure.
http://www.gopurepower.com/
http://www.gopurepower.com/
Postmaster
Joined: Apr 2004
Posts: 3,005
Likes: 2
From: Santa Clarita
I understand what you guys are saying about the high volume pumps. I do have the screw in plug at the timing chain. The pump I have is a Mellings pump. Initial startup gives me a higher volumn of oil to get oil to the upper valve train quicker. After the engine is a warm temps, it drops to a almost normal reading of 40-60 lbs. Back in high school, I was fortunate to have worked with Ed Pink Racing engines. Although the engines we built were 500+ HP, we did build engines for daily street rod use or occasional racing. We always used the same types of pumps. Ed Pinks philosophy was, "it's better to have too much oil pressure than too little or non at all". I've never heard of anyone having problems like you guys described before. I do agree that a stock pump is sufficient for a stock enging and probably a modified street performance engine as well. It's that rule of stock is usually better than modified to avoid problems. I've always been nervous when I see someones oil pressure at 5 lbs, and it only goes 20lbs at acceleration. Interesting info though, thanks guys. Makes me think???? So what is the purpose of having a deep oil pan or transmission pan for more capacity of oil?
Last edited by imlowr2; Dec 3, 2006 at 10:09 AM.
Postmaster
Joined: Sep 2006
Posts: 4,525
Likes: 1
From: oh
thanks you guys!!!I really like the idea of the oil filter that you can reuse!!!Also ,I only saw the top end of my engine and it looked clean.So should I change oil to detergeant oil now after 50 years?I KNOW THE 272 WAS NEVER WORKED ON.THANKS
Fleet Owner
Joined: Jul 2004
Posts: 27,294
Likes: 1,055
From: NM
High volume pumps are for race engines set up with loose mains and rods, which gives more HP but at the expense of engine life. They are shooting for a season's life. We have tighter clearances and are looking for years of life. If the pump produces more volume than can go to the system, it builds pressure and dumps back into the oil pan via the relief valve.
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